There are two block types on YWS. Dark Gray and Light Gray. The post you're reading right now is a dark gray. The color of that gray is #d4d4d4. If you'd like to make a post with indention or a poem with varied line breaks, use this code to input space:

The second block type on YWS is the Light Gray. You'll see this on even-numbered posts on the forums, i.e. the first reply. To input invisible spacing in this type of block, which has the color #ececec, use:

____Awesome! That's exactly what I've been needing. I wanted to make my avatar seem to pop out by putting a border in that was the same color as the background, but I knew it wouldn't work if I ever got the even-numbered post.

However, shortly after that I learned how to make transparent avvies. XD